In Andrew Morton’s landmark biography of Diana, he writes her disdain for royal family Christmases began as early as 1981, the year she married Prince Charles

The late Princess of Wales once admitted to being 'terrified' by the Royal Family's 'silly jokes' and 'odd behavior' during her first Christmas at Sandringham in 1981

Princess Diana was reportedly 'mortified' by one particular Christmas tradition during her family festivities at Sandringham and 'hated' attending each year according to a royal biographer

Although Christmas is often thought to be a time for family festivities, even Princess Diana wasn't immune to feeling less than thrilled about spending the holiday period with her royal relatives

According to royal biographer Andrew Morton, Princess Diana "hated" Christmas with the royal family, and found their traditions "terrifying and so disappointing" and "highly fraught." She confided in several of her friends at the time,